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/*************************************************************************/
/*  physics_2d_server_wrap_mt.h                                          */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/
#ifndef PHYSICS2DSERVERWRAPMT_H
#define PHYSICS2DSERVERWRAPMT_H


#include "servers/physics_2d_server.h"
#include "command_queue_mt.h"
#include "os/thread.h"
#include "globals.h"

#ifdef DEBUG_SYNC
#define SYNC_DEBUG print_line("sync on: "+String(__FUNCTION__));
#else
#define SYNC_DEBUG
#endif


class Physics2DServerWrapMT : public Physics2DServer {

	mutable Physics2DServer *physics_2d_server;

	mutable CommandQueueMT command_queue;

	static void _thread_callback(void *_instance);
	void thread_loop();

	Thread::ID server_thread;
	Thread::ID main_thread;
	volatile bool exit;
	Thread *thread;
	volatile bool step_thread_up;
	bool create_thread;

	Semaphore *step_sem;
	int step_pending;
	void thread_step(float p_delta);
	void thread_flush();

	void thread_exit();

	Mutex*alloc_mutex;
	bool first_frame;

	int shape_pool_max_size;
	List<RID> shape_id_pool;
	int area_pool_max_size;
	List<RID> area_id_pool;
	int body_pool_max_size;
	List<RID> body_id_pool;
	int pin_joint_pool_max_size;
	List<RID> pin_joint_id_pool;
	int groove_joint_pool_max_size;
	List<RID> groove_joint_id_pool;
	int damped_spring_joint_pool_max_size;
	List<RID> damped_spring_joint_id_pool;


public:

#define ServerName Physics2DServer
#define ServerNameWrapMT Physics2DServerWrapMT
#define server_name physics_2d_server
#include "servers/server_wrap_mt_common.h"

	//FUNC1RID(shape,ShapeType); todo fix
	FUNC1R(RID,shape_create,ShapeType);
	FUNC2(shape_set_data,RID,const Variant& );
	FUNC2(shape_set_custom_solver_bias,RID,real_t );

	FUNC1RC(ShapeType,shape_get_type,RID );
	FUNC1RC(Variant,shape_get_data,RID);
	FUNC1RC(real_t,shape_get_custom_solver_bias,RID);


	//these work well, but should be used from the main thread only
	bool shape_collide(RID p_shape_A, const Matrix32& p_xform_A,const Vector2& p_motion_A,RID p_shape_B, const Matrix32& p_xform_B, const Vector2& p_motion_B,Vector2 *r_results,int p_result_max,int &r_result_count) {

		ERR_FAIL_COND_V(main_thread!=Thread::get_caller_ID(),false);
		return physics_2d_server->shape_collide(p_shape_A,p_xform_A,p_motion_A,p_shape_B,p_xform_B,p_motion_B,r_results,p_result_max,r_result_count);
	}

	/* SPACE API */

	FUNC0R(RID,space_create);
	FUNC2(space_set_active,RID,bool);
	FUNC1RC(bool,space_is_active,RID);

	FUNC3(space_set_param,RID,SpaceParameter,real_t);
	FUNC2RC(real_t,space_get_param,RID,SpaceParameter);

	// this function only works on fixed process, errors and returns null otherwise
	Physics2DDirectSpaceState* space_get_direct_state(RID p_space) {

		ERR_FAIL_COND_V(main_thread!=Thread::get_caller_ID(),NULL);
		return physics_2d_server->space_get_direct_state(p_space);
	}

	FUNC2(space_set_debug_contacts,RID,int);
	virtual Vector<Vector2> space_get_contacts(RID p_space) const {

		ERR_FAIL_COND_V(main_thread!=Thread::get_caller_ID(),Vector<Vector2>());
		return physics_2d_server->space_get_contacts(p_space);

	}

	virtual int space_get_contact_count(RID p_space) const {

		ERR_FAIL_COND_V(main_thread!=Thread::get_caller_ID(),0);
		return physics_2d_server->space_get_contact_count(p_space);

	}



	/* AREA API */

	//FUNC0RID(area);
	FUNC0R(RID,area_create);

	FUNC2(area_set_space,RID,RID);
	FUNC1RC(RID,area_get_space,RID);

	FUNC2(area_set_space_override_mode,RID,AreaSpaceOverrideMode);
	FUNC1RC(AreaSpaceOverrideMode,area_get_space_override_mode,RID);

	FUNC3(area_add_shape,RID,RID,const Matrix32&);
	FUNC3(area_set_shape,RID,int,RID);
	FUNC3(area_set_shape_transform,RID,int,const Matrix32&);

	FUNC1RC(int,area_get_shape_count,RID);
	FUNC2RC(RID,area_get_shape,RID,int);
	FUNC2RC(Matrix32,area_get_shape_transform,RID,int);
	FUNC2(area_remove_shape,RID,int);
	FUNC1(area_clear_shapes,RID);

	FUNC2(area_attach_object_instance_ID,RID,ObjectID);
	FUNC1RC(ObjectID,area_get_object_instance_ID,RID);

	FUNC3(area_set_param,RID,AreaParameter,const Variant&);
	FUNC2(area_set_transform,RID,const Matrix32&);

	FUNC2RC(Variant,area_get_param,RID,AreaParameter);
	FUNC1RC(Matrix32,area_get_transform,RID);

	FUNC2(area_set_collision_mask,RID,uint32_t);
	FUNC2(area_set_layer_mask,RID,uint32_t);

	FUNC2(area_set_monitorable,RID,bool);
	FUNC2(area_set_pickable,RID,bool);

	FUNC3(area_set_monitor_callback,RID,Object*,const StringName&);
	FUNC3(area_set_area_monitor_callback,RID,Object*,const StringName&);


	/* BODY API */

	//FUNC2RID(body,BodyMode,bool);
	FUNC2R(RID,body_create,BodyMode,bool)

	FUNC2(body_set_space,RID,RID);
	FUNC1RC(RID,body_get_space,RID);

	FUNC2(body_set_mode,RID,BodyMode);
	FUNC1RC(BodyMode,body_get_mode,RID);


	FUNC3(body_add_shape,RID,RID,const Matrix32&);
	FUNC3(body_set_shape,RID,int,RID);
	FUNC3(body_set_shape_transform,RID,int,const Matrix32&);
	FUNC3(body_set_shape_metadata,RID,int,const Variant&);

	FUNC1RC(int,body_get_shape_count,RID);
	FUNC2RC(Matrix32,body_get_shape_transform,RID,int);
	FUNC2RC(Variant,body_get_shape_metadata,RID,int);
	FUNC2RC(RID,body_get_shape,RID,int);

	FUNC3(body_set_shape_as_trigger,RID,int,bool);
	FUNC2RC(bool,body_is_shape_set_as_trigger,RID,int);

	FUNC2(body_remove_shape,RID,int);
	FUNC1(body_clear_shapes,RID);

	FUNC2(body_attach_object_instance_ID,RID,uint32_t);
	FUNC1RC(uint32_t,body_get_object_instance_ID,RID);

	FUNC2(body_set_continuous_collision_detection_mode,RID,CCDMode);
	FUNC1RC(CCDMode,body_get_continuous_collision_detection_mode,RID);

	FUNC2(body_set_layer_mask,RID,uint32_t);
	FUNC1RC(uint32_t,body_get_layer_mask,RID);

	FUNC2(body_set_collision_mask,RID,uint32_t);
	FUNC1RC(uint32_t,body_get_collision_mask,RID);


	FUNC3(body_set_param,RID,BodyParameter,float);
	FUNC2RC(float,body_get_param,RID,BodyParameter);


	FUNC3(body_set_state,RID,BodyState,const Variant&);
	FUNC2RC(Variant,body_get_state,RID,BodyState);

	FUNC2(body_set_applied_force,RID,const Vector2&);
	FUNC1RC(Vector2,body_get_applied_force,RID);

	FUNC2(body_set_applied_torque,RID,float);
	FUNC1RC(float,body_get_applied_torque,RID);

	FUNC3(body_add_force,RID,const Vector2&,const Vector2&);
	FUNC3(body_apply_impulse,RID,const Vector2&,const Vector2&);
	FUNC2(body_set_axis_velocity,RID,const Vector2&);

	FUNC2(body_add_collision_exception,RID,RID);
	FUNC2(body_remove_collision_exception,RID,RID);
	FUNC2S(body_get_collision_exceptions,RID,List<RID>*);

	FUNC2(body_set_max_contacts_reported,RID,int);
	FUNC1RC(int,body_get_max_contacts_reported,RID);

	FUNC2(body_set_one_way_collision_direction,RID,const Vector2&);
	FUNC1RC(Vector2,body_get_one_way_collision_direction,RID);

	FUNC2(body_set_one_way_collision_max_depth,RID,float);
	FUNC1RC(float,body_get_one_way_collision_max_depth,RID);


	FUNC2(body_set_contacts_reported_depth_treshold,RID,float);
	FUNC1RC(float,body_get_contacts_reported_depth_treshold,RID);

	FUNC2(body_set_omit_force_integration,RID,bool);
	FUNC1RC(bool,body_is_omitting_force_integration,RID);

	FUNC4(body_set_force_integration_callback,RID ,Object *,const StringName& ,const Variant& );


	bool body_collide_shape(RID p_body, int p_body_shape,RID p_shape, const Matrix32& p_shape_xform,const Vector2& p_motion,Vector2 *r_results,int p_result_max,int &r_result_count) {
		return physics_2d_server->body_collide_shape(p_body,p_body_shape,p_shape,p_shape_xform,p_motion,r_results,p_result_max,r_result_count);
	}

	FUNC2(body_set_pickable,RID,bool);

	bool body_test_motion(RID p_body,const Matrix32& p_from,const Vector2& p_motion,float p_margin=0.001,MotionResult *r_result=NULL) {

		ERR_FAIL_COND_V(main_thread!=Thread::get_caller_ID(),false);
		return physics_2d_server->body_test_motion(p_body,p_from,p_motion,p_margin,r_result);
	}

	/* JOINT API */


	FUNC3(joint_set_param,RID,JointParam,real_t);
	FUNC2RC(real_t,joint_get_param,RID,JointParam);


	///FUNC3RID(pin_joint,const Vector2&,RID,RID);
	///FUNC5RID(groove_joint,const Vector2&,const Vector2&,const Vector2&,RID,RID);
	///FUNC4RID(damped_spring_joint,const Vector2&,const Vector2&,RID,RID);

	FUNC3R(RID,pin_joint_create,const Vector2&,RID,RID);
	FUNC5R(RID,groove_joint_create,const Vector2&,const Vector2&,const Vector2&,RID,RID);
	FUNC4R(RID,damped_spring_joint_create,const Vector2&,const Vector2&,RID,RID);

	FUNC3(pin_joint_set_param,RID,PinJointParam,real_t);
	FUNC2RC(real_t,pin_joint_get_param,RID,PinJointParam);

	FUNC3(damped_string_joint_set_param,RID,DampedStringParam,real_t);
	FUNC2RC(real_t,damped_string_joint_get_param,RID,DampedStringParam);

	FUNC1RC(JointType,joint_get_type,RID);


	/* MISC */


	FUNC1(free,RID);
	FUNC1(set_active,bool);

	virtual void init();
	virtual void step(float p_step);
	virtual void sync();
	virtual void end_sync();
	virtual void flush_queries();
	virtual void finish();

	int get_process_info(ProcessInfo p_info) {
		return physics_2d_server->get_process_info(p_info);
	}

	Physics2DServerWrapMT(Physics2DServer* p_contained,bool p_create_thread);
	~Physics2DServerWrapMT();


	template<class T>
	static Physics2DServer* init_server() {

		int tm = GLOBAL_DEF("physics/2d/thread_model",1);
		if (tm==0) //single unsafe
			return memnew( T );
		else if (tm==1) //single saef
			return memnew( Physics2DServerWrapMT( memnew( T ), false ));
		else //single unsafe
			return memnew( Physics2DServerWrapMT( memnew( T ), true ));


	}

#undef ServerNameWrapMT
#undef ServerName
#undef server_name

};

#ifdef DEBUG_SYNC
#undef DEBUG_SYNC
#endif
#undef SYNC_DEBUG

#endif // PHYSICS2DSERVERWRAPMT_H